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Now showing items 31-40 of 110
Estudo das propriedades estruturais, elétricas e ópticas de filmes finos de Niobato de Sódio e Potássio (KNN), fabricados por deposição a laser pulsado (PLD)
(Universidade Federal de São Carlos, 2017-05-05)
Environmental problems arising from lead toxicity in materials, such as those in lead zirconate titanate (PZT) have stimulate the search for new lead-free ferroelectrics materials with ferroelectric and piezoelectric ...
Estudo das propriedades estruturais através de espectroscopia Raman de amostras de grafite de poucas camadas (GPC) obtidas por clivagem mecânica
(Universidade Federal de São Carlos, 2011-08-25)
In this work, We report studies on samples of graphite few layers obtained from micromechanical techniques of cleaving Manual of highly oriented pyrolytic graphite (HOPG). In order to checking the number of layers in each ...
Importância dos efeitos de absorção no espalhamento elástico de elétrons por moléculas
(Universidade Federal de São Carlos, 2017-03-11)
In this work we study the importance of absorption effects on the electron-molecule interaction dynamics. These effects are simulated by a complex optical model potential from which the imaginary part is an absorption ...
Estudo de algoritmos para a determinação da temperatura de fusão
(Universidade Federal de São Carlos, 2015-08-31)
In this work, we studied the main methods used in molecular dynamics simulations to obtain the melting temperature of crystalline materials. The methods evaluated were the solid-liquid coexistence, mechanical melt of bulk, ...
Aplicações da espectroscopia Raman ao estudo dos efeitos de temperatura e de pressão hidrostática em cristais orgânicos: 2-amino-1,3,4- tiadiazol, 2-amino-5-fenil-1,3,4-tiadiazol e 2-amino-5-(4-deciloxi-fenil)-1,3,4- tiadiazol
(Universidade Federal de São Carlos, 2015-03-27)
Molecular organic crystals are a promising class of materials because of their
excellent physical, chemical and biological properties. Among them, Thiadiazole and its
derivatives have been investigated in the last years ...
Propriedades inter e intragranulares de amostras mesoscópicas de YBa2Cu3O7-δ ; preparadas por síntese química
(Universidade Federal de São Carlos, 2010-05-14)
This work consists of a systematic study of the evolution of the morphological characteristics and the superconducting properties of YBCO samples prepared using the Modified Polymeric Precursors Method (MPPM). Aiming at ...
Equação mestra microscópica para o modelo de Rabi
(Universidade Federal de São Carlos, 2013-02-27)
The Rabi model is the most complete one has to describe the interaction between radiation and matter. However, as it is difficult to obtain the exact solution to this model, many of recent atom-field studies have used the ...
Transparência eletromagneticamente induzida em diferentes sistemas físicos e seu análogo em osciladores acoplados
(Universidade Federal de São Carlos, 2013-08-01)
The simultaneously incidence of two light beams on one or more atoms causes destructive interference of these beams in atomic states causing cancellation of the absorption of one of the incident beams and this phenomenon ...
Síntese e caracterização de filmes do sistema Zn(1−x)CoxO obtidos por spray pirólise
(Universidade Federal de São Carlos, 2016-03-09)
We report a systematic study on the structural, morphological and optical properties of
Zn1−xCoxO thin films grown by spray pyrolysis. The employed nominal concentrations
were up to 15 Co %. The films were deposited on ...
Estudo das propriedades físicas do composto NixPb1-xTiO3: compósito versus solução sólida
(Universidade Federal de São Carlos, 2017-03-15)
In this work a physical properties study of the samples series NixPb1-xTiO3 will be presented using several experimental techniques, with emphasis on Raman spectroscopy and X-ray diffraction. For these samples, Raman ...